REMOVAL OF HEAVY METAL FROM AQUEOUS SOLUTIONS USING CHINESE LOESS SOIL
Loess soil, a relatively abundant and inexpensive material in China, is being investigated as an adsorbent to remove heavy metals from aqueous solutions. Pb(II), Cu(II) and Zn(II) can be removed very efficiently with loess soil, and the adsorption capacity of loess soil towards those three heavy metal ions follows the order: Pb(II) (270.3 mg g-1)> Zn(II) (215.9 mg g-1)> Cu(II) (108.9 mg g-1). Factors relevant to adsorption process such as reaction time, pH and loess dosage were discussed in this paper. The clay minerals and organic matter were found to play important roles in adsorption process and the adsorption mechanism included ion exchange, surface complex and surface precipitation.
loess soil heavy metal adsorption removal kinetics isotherm
Xiao-Wu TANG Yan WANG Zhen-Ze LI
MOE Key Laboratory of Soft Soils and Geoenvironmental Eng., Zhejiang University, China Faculty of Engineering, Utsunomiya University, Japan
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
314-319
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）